This section has been examined and compared to the standard white coloring material and the same type of commercial standard coloring ability and general trial method. In the description of the method (A and B), method A is better than method B, which is suitable for testing different materials. Note: This general method applies when you specify an optical material, and if you are using an existing method for specifying a material product, please refer to the following notes: Specific changes to the material characteristics and requirements. However, when this general method is not suitable for use with a certain specific color, the special method has the ability to erase white color compared to the white color of the material.
ISO 787-17:2002 Referenced Document
GB/T 3186-2006 Paints, varnishes and raw materials for paints and varnishes. Sampling*, 2006-09-01 Update